Răspuns:
⁴⁾a+⁴⁾2a+²⁾a/2+a/4=⁴⁾915
4a+8a+2a+a=3660
15a=3660=>a=3660:15=>a=244
verificare:
244+2·244+244:2+244:4=244+488+122+61=915
Salut !
[tex]a + 2a + \frac{a}{2} +\frac{a}{4} = 915 \\amplificam \\ cu 4\\4a+8a+2a+a = 3660\\15a=3660 => a = 244\\Succes![/tex]